Title:
多段変換器の制御装置
Document Type and Number:
Japanese Patent JP7051599
Kind Code:
B2
Abstract:
To achieve single-pulse drive capable of suppressing generation of a high harmonic wave and reducing voltage distortion.SOLUTION: A control device for a multistage converter according to an embodiment comprises: a modulation rate calculation unit 21 that calculates a modulation rate of a multistage converter 1; a phase shift amount generation unit 22 that generates a phase shift amount of a gate signal that drives an upper arm S1 of a positive leg LP and an upper arm S3 of a negative leg LN of each unit converter 11-14 for a number of stages of the unit converters 11-14, wherein the phase shift amount corresponds to the modulation rate; and gate signal generation unit 23 that generates first gate signals of the number of stages and a second gate signal in each of which an on-pulse width and an off-pulse width are the same as each other, wherein each first gate signal has a center of the on-pulse width that is progressed from a phase of an output voltage command by the phase shift amount, and the second gate signal has a center of the off-pulse width that is delayed from the phase of the output voltage command by the phase shift amount, and that assigns the first gate signals to the upper arms S1 of the positive legs LP of the unit converters 11-14, and assigns the second gate signal to the upper arms S3 of the negative legs LN of the unit converters 11-14.SELECTED DRAWING: Figure 1
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Inventors:
Shunsuke Tamada
Application Number:
JP2018111381A
Publication Date:
April 11, 2022
Filing Date:
June 11, 2018
Export Citation:
Assignee:
Toshiba Mitsubishi Electric Industrial Systems Co., Ltd.
Toshiba Infrastructure Systems & Solutions Corporation
Toshiba Infrastructure Systems & Solutions Corporation
International Classes:
H02M7/48; H02M7/49; H02M7/497
Domestic Patent References:
| JP201663687A | ||||
| JP2006320103A | ||||
| JP2002233180A |
Attorney, Agent or Firm:
Masatoshi Kurata
Nobuhisa Nogawa
Ryuji Mine
Naoki Kono
Nobuhisa Nogawa
Ryuji Mine
Naoki Kono
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